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{No Model.) 3 Sheets-Sheet l.

G. A. GRAY & E. RICHTER. FEED FOR METAL PLANERS.

No, 597,355. Patented Jan. 11,1898.

s 83 Attorney Witnesses: W a, 1111 Inventors I W mo Model.) 3.Sheet--Sheet 2-.

G. GRAY & E. RICHTER.

FEED FOR METAL PLANERS.

' No. 597,355. Patented Jan. 11, 1898.

Witnesses: Inventors,

I v w Sax. J6 mttorney (No Model.) 3'Sheets-Sheet 3.

RR. GRAY R E. RICHTER. FEED FOR METAL PLANERS.

No. 597,355 Patented Jan. 11, 1898.

RRRRRRRRRRRR z Inventors 1 w Attorney UNITED STATES PATENT FFlCE,

GEORGE A. GRAY AND ERNST RICHTER, OF CINCINNATI, OHIO, ASSIGNORS TO THEG. A. GRAY COMPANY, OF SAME PLACE.

FEED FOR METAL-PLANERS.

SIECIFICATION forming art of Letters Patent No. 597,35 5, dated January11, 1898.

Application filed September 10, 1897. Serial No. 651,172. (No modelJ' Toall whom it may concern:

Be it known that we, GEORGE A. GRAY and ERNST RICHTER, of Cincinnati,Hamilton county, Ohio, have invented certain new and useful Improvementsin Feeds for Metal- Planers, (Case A,) of which the following is aspecification.

This invention pertains to the feeding de- Vices of metal-planingmachines, and relates to improvements whereby the feed of thecutting-tool may take place at the beginning or at the end of thecutting stroke or at both ends of the cutting stroke, as desired.

Our improvements will be readily understood from the followingdescription, taken in connection with the accompanying drawings, inwhich- Figure 1 is a side elevation of a feed mechanisni exemplifyingour invention; Fig. 2, a front elevation of the same, the front beingassumed as at the left in Fig. 1; Fig. 3, a plan, and Fig. .i: avertical section through the hearing of one of the tripping-pins.

In the drawings, 1 indicates fixed frame parts for the support of themoving mechanism; 2, the driving-shaft of the planer; 3, the tight andloose pulleys for the belt producing the cutting motion of the planer,the lefthand one of these pulleys being assumed as the loose pulley; 4,the tight and loose pulleys for the belt producing the backing motion ofthe planer; 5, the belt-shifter or some part having an equivalent motionin one direction or the other as the reversal of the planer motion takesplace; 6, the usual feed-crank, which, by making a single rotation,causes the proper feeding motion to be imparted to the cutting tool ortools; 7, the usual crankpin, adjustable in the crank to determine thedegree of feed, this crank-pin receiving the usual connections; 8, theshaft of crank 6, the crank being, however, loose with reference to thisshaft, as in our Patent No. 447,820, dated March 10, 1891, hereinafterreferred to as our'former patentg 9, a gear fast on shaft 8; 1G, apinion engaging gear 9 and turning with the loose pulley of the pair ofpulleys 3; 11, a friction-strap carried by crank 6 and serving whengripping to lock crank 6 to its shaft, as in our former patent; 12, acam-lever carried by crank 6 and adapted, when the lever is pressedinwardly, to force the friction-strap open and allow shaft 8 to revolve,while the crank 6 re mains stationary, as in our former patent; 13, anarm hung on a pivot and standing normally in the path of and engagingthe end of cam-lever 12, as seen in Fig. :2, and adapted to swing to theright so as to release the camlever; 14, apair of arms projecting fromarm 13, each carrying at its end a bearing-boss, as in Fig. 4; 15, atrip-pin sliding in one of these bearing-bosses and projecting its endto the rear of the boss; 16, a similar trip-pin in the otherbearing-boss; l7, handles on the outer ends of the trip-pins, by meansof which the trip-pins may be drawn inwardly and turned;

18, springs in the bearing-bosses urging the trip-pins rearwardly; 19,pins projecting from the trip-pins and engaging open slots in the frontends of the bearing-bosses and, while so engaging, preventing theturning of the pins, the construction being obviously such that, bymeans of its handle, either trip-pin may be drawn forwardly and soturned that pin 19 engages the outer face of the bearingboss, thusretaining the trip-pin in retracted position; 20, a rock-shaft; 21, anarmfast on this rock-shaft, the extremity of this arm forming a toeengaging under the rear end of trip-pin 15 when that trip-pin is inrearward projected position; 22, a similar arm fast on rock-shaft 20,its toe engaging over trip-pin 16 when that trip-pin is projected; 28,an operating-arm fast on rock-shaft 20 and shown as being integrallyformedwith arm 21; and 24, a pin carried by belt-shifter 5 and engag ingarm 23, so that the reciprocations of the belt-shifter give oscillatingmotion to arms 21 and 22.

Assume the parts in the position shown in the drawings and assume thatgear 9 is turning in the direction of its arrow. This gear and its shaftwill turn idly, feed-crank 6 being stationary byreason of the fact thatits friction is unlocked and held by arm 13. If, now, by any means arm13 can be swung to the right, Fig. 2, cam-lever 12 would be released andthe friction-strap will clutch feed-crank 6 to its shaft 8, andthereupon the feed-crank would turn with its shaft and would continue soto turn indefinitely. If, while the feedcrank was so turning, arm 13 berestored to the position shown in the drawings, it would intercept thecam-lever and cause the calm lever to release the friction-strap, thusholding the feed-crank stationary while its shaft continued itsrotation. One rotation of the fcedcrank is to produce the proper feedingmotion for the planer, audit is the duty of arm 13 to move to the rightat the proper time and permit this rotation and then to again take itsintercepting position and arrest the feed-crank at the end of its singlerotation. The normal position of arm 13 is the intercepting positionshown in Fig. 2, and the gravity of the arm tends to hold it in thatposition or to return it to it if it be swung to the right.

If it be desired that the feeding motion shall take place at the end ofthe cutting stroke'of the planer, then it is only necessary that whenthe reversal of planer motion takes place at the end of the cuttingstroke the arm 13 be swung to the right, so as to free camlever 12, andthen return to its intercepting position before the feed-crank shallhave completed its turn, so that as the feed-crank finishes its rotationits cam-lever will be engaged by arm 13 to release the friction-clutchand arrestthe feed-crank. Referring now to Fig. 1, let it be assumedthat belt-shifter 5 moves tothe right at the end of the cutting strokeof the planer. The effect of such movement of the beltshifter is to rockarm 21 upwardly, and as the toe of this arm engages under trip-pin 15'it is obvious that arm 13 will be swung to the right, thus releasing thecam-lever and permitting the crank to be rotated by its shaft. The toeof arm 21 in rising quickly passes and disengages from trippin 15, thuspermitting arm 13 to again take up its intercepting position. It istherefore obvious that the movement of the belt-shifter to the right haspermitted a single rotation of the feed-crank.- \Vhen the planer motionreverses at the beginning of the cutting stroke, the belt-shifter willmove to the left and arm 21 will rock downwardly, and in doing so thetoe of the arm will again take position below trip-pin 15, the trip-pinmoving outwardly against the resistance of spring 18 to permit the toeto pass the pin. \Vhile arm 21 has thus been effective on trip-pin 15,arm 22 has been without effect on trip-pin 16 by reason of the fact thatthe trip-pin 16 is in position of retraction out of reach of arm 22. Ifnow we retract trip-pin 15 and turn it so that its pin 19 engages theend of its bearing-boss, then trippin 15 will be out of reach of arm 21and the movement of the belt-shifter will have no effect upon the feeddevices of the planer. Provision is thus made, on the assumption given,for causing the feeding motion of the planer to take place at the end ofthe cutting stroke or for causing the feeding devices to be entirelyidle during the working of the planer.

Assume now that trip-pin 15 is put into its retracted idle position, sothat no feeding motion takes place, and assume, further, that trip-pin1.6 is released, so as to-become projected into the path of arm 22. Insuch case it is obvious that the movement of the beltshifter to the leftwill cause a rocking to release arm 13, thus causing the feeding motionof the planer to take place at the beginning of the cutting stroke,trip-pin15 and arm 21 in such case being inert. Provision is thus seento be made for having the feed take place at either the beginning or endof the cutting stroke of the planer. 16 beallowed to project into activeposition, then arm 13 will become disengaged both before and after thecutting stroke, and the feedcrank will make a rotation at each end ofthe cutting stroke. Provision isthus made for causing the planer-feed totake place at either end of the cutting stroke or at both ends.

It is now in order to analyze the function of the parts to determine theprinciple of the invention. In the exemplification the shaft 8 is shownas being turned through the medium of pinion 10, turning with the loosepulley pertaining to the cutting motion of the planer. This is aconvenient construction and the one we follow in practice, but it willat once be obvious that any means, for turning shaft 8 continuously, orwhen its turning is needed, will be the equivalent of the specifictransmitting means illustrated, it being only necessary that shaft 8shall be turning at the time the feeding motion is wanted. Again, thefriction-clutch arrangement illustrated, being the same as in our formerpatent, will be found quite satisfactory in practice, but will obviouslyfind its full equivalent in any of the well-known devices for impartingarresting motion between one moving piece of machinery and another pieceto be intermittently moved forward by it. Again, in the exemplificationthe initiating of the feeding motion is brought about by thereciprocations of the belt-shifter 5, which makes a single stroke ateach reversal of the planer. The belt-shifter is a convenient part toserve as such initiating agent, but it is obvious that the initiationmay be effected by any other part which makes a stroke at each reversalof the planer. It is therefore to be understood that the specificdevices set forth are merely exemplifying in character and illustratethe best mode in which we contemplate applying the principle of ourinvention.

In our Patent No. 447,820, dated March 10, 1891,we employ a feed-clutchwith a cam-lever tripped by the belt-shifter, but the feedingimpulsecould occur only at one end of the stroke of the planer-table, at thebeginning or end of the cutting stroke, as predetermined in theconstruction of the machine. By means of our present invention thefeeding impulse If both trip-pins 15 and may be caused by mereadjustment to occur at either end or at both ends of the cutting stroke.

WVe claim as our invention 1. In feeds for metal-planers, thecombination, substantially as set-forth, with a feed part, as thecam-lever of a clutch, to be released and arrested at each feedingimpulse, and a reciprocating part, as the belt-shifter, making a strokeat each reversal of the planer motion, of a releasing and arrestingdevice, as an arm structiire, and tripping connections between saidreciprocating part and said releasing and arresting device to cause thelatter to act on said feed part at each end of each stroke of saidreciprocating part.

2. In feeds for metal-planers, the combina tion, substantially as setforth, with a feed part, as the cam-lever of a clutch, to be re leasedand arrested at each feeding impulse, and a reciprocating part, as thebelt-shifter, making a stroke at each reversal of the plan er motion, ofa releasing and arresting device, as an arm structure, trippingconnections between said reciprocating part and said releasing andarresting device to cause the latter to act on said feed part at eachend of each stroke of said reciprocating part, and removable engagingparts of said tripping connections arranged to suppress the action ofsaid reciprocating part on said feed part.

3. In feeds for metal-planers, the combination, substantially as setforth, with a feed part, as the cam-lever of a clutch, to be retrip-pinsand serving to give said rocking arm a releasing motion at each motionof the tripping-arms, and connections between said tripping-armsand saidreciprocatingpart,to cause the tripping-arms to move at each movement ofsaid reciprocating part.

5. In feeds for metal-planers, the combination, substantially as setforth, with a feed part, as the cam-lever of a clutch, to be releasedand arrested at each feeding impulse, and a reciprocating part, as thebelt-shifter, making a stroke at each reversal of the planer motion, ofa rocking arm serving to release and arrest said feed part, a pair ofretractable trip-pins carried thereby, tripping-arms engaging saidtrip-pins and serving to give said rocking arm a releasing motion ateach motion of the tripping-arms, and connections between saidtripping-arms and said reciprocatin g part, to cause the tripping-armsto move at each movement of said reciprocating part.

GEORGE A. GRAY. ERNST RICHTER. Vitnesses:

AnoLPn Znns'r, HERMAN ERDMAN.

